What are the buttons on the G-300 watch

- Keep on pressing mode button on watch till alarm mode appears.
- to verify alarm mode check out the time alarm rings and match it with the display while selecting the mode.
- press adjust button to disable
- or press two buttons on right of watch to adjust the alarm

casio gshock...Setting the TimeG-Shock watches feature a digital display that is set using the function buttons on the outside of the watch face. To set the time, press and hold the the upper left ...">casio gshock...Setting the TimeG-Shock watches feature a digital display that is set using the function buttons on the outside of the watch face. ...

IN THE OUTER PROFILE YOU HAVE FOUR BUTTONS,JUST PRESS THE TIME/DATE BUTTON AND IN THE CENTRE OF THE WATCH YOU FIND THE DAY(EG:SUNDAY)IS BLINKING,JUST PRESS THE OPPOSITE SIDE BUTTONS TO CHANGE THEDATE,AFTER CHANGING DAY,AGAIN PRESS THE DATE/TIME BUTTON NOW APPEARS THE TIME BUTTON(EG:11.00 HRS),NOW PRESS THE OPPOSITE SIDE BUTTON FOR CHANGING ......
THANKING YOU.........GOOD DAY

Thank you for contacting FixYa.
You can find the manual to set watch here:

http://mygshock.com/wiki/Manuals_and_Documentation

Best regards. Jewel

Take the four-digit caliber number from the watch back, and go here:

http://world.casio.com/wat/download/en/manual/

Good luck, Bill

Call www.casiosalesandservice.com 877.659.0761. They do repairs.

Try to hold down the light button for a few seconds.

Hold down all four buttons to reset the watch. My time didn't reset but the beeping FINALLY stopped.

did the inside of the watch get shifted when the battery was put in or cover repleced. So the out side button doesn't touch the inside sensors.

if you download this manual from casio it may help as the light on the watch can be turned off, although i dont know if thats what happened in your case...if not then you need to see a watch repairer...:)

http://ftp.casio.co.jp/pub/world_manual/wat/en/qw1659.pdf

good luck